单项选择题
To allow a regular user account to mount and unmount a filesystem （for instance， a cdrom or floppy）， which option need to be added to the corresponding line in /etc/fstab？（）
A. nouidchk B. alluser C. user D. auto
填空题 WhichprogramfindsonlyfilesthatareinyourPATH？（）
多项选择题 WhatdoestheFilesystemHierarchyStandardenable？（）
单项选择题 Youarelookingforanexecutablefilefoo.Selectthecommandthatwouldsearchforfoowithindirectoriessetintheshellvariable，PATH.（）
